
CUPO® is a polarising glass for near infrared light utilising plasma absorption by copper fine particles. It is thin, achieves both high extinction ratios and low insertion losses, making it ideal as a component of small parts.
- Copper fine particles dispersed in glass
- High extinction ratio
- Low insertion loss
- High reliability

- Optical isolator
- Optical modulator
- Wavelength selection switch
Band | O-band, E-band, S-band, C-band, L-band |
---|---|
Extinction Ratio | > 35 dB (Measured distance 5 mm) |
> 50 dB (Measured distance 300 mm) | |
Transmittance (No AR coating) | > 90% |
Thickness (Standard) | 0.2 mm |